<?hh // strict
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the "hack" directory of this source tree.
 *
 *
 */

async function plus_three(Awaitable<string> $x): Awaitable<int> {
  $a = await $x;
  return 3 + $a;
}
